Roofing-paint



iJNrr D STATES ATENT Urrrca.

ALLEN MGDONNELL, OF RULO, NEBRASKA.

ROOFING-PAINT.

SPEQIFICATION forming part of Letters Patent No. 257,881, dated May 16, 1882.

Application filed October 14, 1881. (No specimens.)

To all whom it may concern:

Be it known that I, ALLEN McDoNNnLL, of Rule, Richardson county, Nebraska, have invented certain new and useful Improvements in Roofing-Paint, of which the following is a specification. V

The object of my invention is to provide a durable, easilyapplied paint for rooting, which will render the shingles or other roofing mate rial water-proof and prevent them from decaying.

1 am aware that wtrious kinds of paint and composition have been employed for painting roofs; but the ingredients which I employ render my paint much more durable than the paintnowin use.

My paint maybe employed with either shingle or metallic or paper roofing, but it will he found most useful with shingle roofs, as it will render them as durable as metallic roofs and much less expensive.

The ingredients which I employ are coal-tar, turpentine, sulphuric acid, and asphaltum, and the preferred proportion of each and manner of compounding are as follows: Ten gallons of coal-tar are put into a kettle and raised to a temperature less than the boiling-point, after which one anda half quart of turpentine is added and the two thoroughly mixed by stirring. I then add three pounds of asphaltum, finely pulverized, which is thoroughly mixed with the tar and turpentine, after which I add one-half pound of sulphuric acid, stirring as before until the whole is thoroughly mixed. After the mixture has heen allowed to stand for about two hours it is ready for use, and may be applied, as before stated, to either shingle, metallic, or paper root's.

The above ingredients, when mixed and pro pared as above, make a paint which is waterproof, and which also acts as acement, firmly uniting the shingles together and rendering them impervious to the action of the weather.

While the above proportions for the various ingredients have been found toproducethe best and most'perfect results, i do not confine myself to the exact proportions herein specified, as it may sometimes be found necessary and advantageous to vary them somewhat. So, also, the asphalrum may be replaced by some other similar pigment substance which will not materially alter the efficiency of the paint.

In the employment of the paint with metallic or paper roofs I preferably coat the roofboards with the paint, after which the metal or paper is put on in the usual manner, and another coating of the paint is then put on. \Vhen shingles are used each shingle is painted as it is put on the roof, so that when the paint becomes dry and hard the shingles are ce mented together, making a perfectly-tight and Water proof and durable roof.

The above-described paint will also be found very useful as a covering for old shingle roots, as by its use these roofs may be rendered water-proof, and thereby saved for a long time.

What I claim as new and of my invention, and desire to secure by Letters Patent, is as follows: W

1. The herein-described paintfor roots, consisting of a mixture of coal-tar, turpentine, sulphuric acid, and a suitable pigment material, substantially as herein described.

2. A composition for painting roofs, consisting of a mixture of coal-tar, turpentine, sulphuric acid, and asphaltum, when mixed in the proportions and by the process substantially as herein described.

ALLEN MGDONNELL.

Attest:

JOHN GAGNON, H. M. EDGGOMB. 

